WALLACE RS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(029150) WALLACE RANGER STN
From Year=1916 To Year=1959
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	7	14	50	191	416	652	844	789	612	315	61	19	3971
40 S	7	21	71	263	679	1331	2175	2963	3575	3890	3952	3971	3971
45 M	0	1	9	86	271	502	689	634	462	183	15	4	2857
45 S	0	2	11	97	369	871	1560	2193	2655	2838	2853	2857	2857
50 M	0	0	1	26	146	354	534	479	312	83	1	0	1935
50 S	0	0	1	27	173	526	1060	1539	1851	1934	1935	1935	1935
55 M	0	0	0	4	56	216	379	324	171	19	0	0	1169
55 S	0	0	0	4	60	276	655	979	1150	1169	1169	1169	1169
60 M	0	0	0	0	11	101	225	171	62	2	0	0	573
60 S	0	0	0	0	11	113	338	509	571	573	573	573	573

Corn Growing Degree Days
50 M	17	28	71	173	319	453	540	500	411	244	78	35	2868
50 S	17	45	116	289	607	1060	1601	2100	2512	2756	2834	2868	2868

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu